Cupellation is a process used for the refining of

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$Pb$

$Ag$

$Cu$

$Fe$

answer is A.

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Detailed Solution

The technique of cupellation is used to remove base metals like lead, copper, zinc, and other elements contained in the ore or alloyed metal from noble metals like gold and silver. This method involves heating up ore to separate noble metals from their base metal counterparts.

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